The blog will be the public-facing news source and content aggregation site. This is what people will see when they google around for Baltimore Clojure/Haskell/Scala or whatever. Twitter is around for things like scheduling announcements in addition to news on the blog. The e-mail address is mostly for signing up for the other accounts, maybe there's something useful that could be done with it later :-), and the github will store presentation slides, images, sample code, etc.
This newsgroup is for core discussion and planning. I would expect casual members to get most of their information from the blog and twitter.
Help us decide what talks to give by voting for a PfP (reply to the thread) and propose new talks by creating a new thread prefixed by PfP (proposal for presentation).
Enjoy!
-gary